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Journal of Electrical Bioimpedance
Volume 3 (2012): Numero 1 (January 2012)
Accesso libero
Description of corrections on electrode polarization impedance using isopotential interface factor
J. A. Gómez-Sánchez
J. A. Gómez-Sánchez
e
C. J. Felice
C. J. Felice
| 30 ago 2012
Journal of Electrical Bioimpedance
Volume 3 (2012): Numero 1 (January 2012)
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Article Category:
Articles
Pubblicato online:
30 ago 2012
Pagine:
29 - 35
Ricevuto:
29 mag 2012
DOI:
https://doi.org/10.5617/jeb.298
Parole chiave
Concentric axial electrode
,
adjacent electrode
,
electrical anisotropy
,
electrode polarization impedance
,
index IEA
© 2012 J. A. Gómez-Sánchez, C. J. Felice, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Figure 1
Electrode shapes. (a) Adjacent tetrapolar. (b) Axial concentric tetrapolar. The arrows show the dimension in millimeters.
Figure 2
Schematic measurements in muscle (a) Measurements along longitudinal direction of fiber axis with both electrode configurations (b) Measurements in transverse direction with both electrode configurations.
Figure 3
Isopotential interface factor for (a) adjacent electrode system and (b) axial concentric electrode system. A color bar indicates the magnitude of the isopotential interface factor in both 3D graphs. The isopotential factor was higher in adjacent shape compared with axial concentric tetrapolar electrode system.
Figure 4
Muscle conductivity calculated with both respective equations. (a) Adjacent electrode, (b) concentric electrode, filled symbols are conductivity with correction by isopotential interface factor (Δ: non adjusted longitudinal conductivity, □: non adjusted transverse conductivity, ▲: longitudinal conductivity with correction, ■: transverse conductivity with correction).
Figure 5
Values of IEA index between 0.1 Hz and 8 MHz. (Δ: anisotropy values obtained with axial concentric electrode shape, □: anisotropy values obtained with adjacent electrode shape).
Figure 6
IEA angle. (Δ: values obtained with axial concentric electrode shape, □: values obtained with adjacent electrode shape).